@article{1029002308, author = {Birman, Joan S. and Montesinos, Jos\'e Mar\'\i a}, title = {On minimal Heegaard splittings.}, journal = {Michigan Math. J.}, volume = {27}, number = {1}, year = {1980}, pages = { 47-57}, language = {en}, url = {http://dml.mathdoc.fr/item/1029002308} }
Birman, Joan S.; Montesinos, José María. On minimal Heegaard splittings.. Michigan Math. J., Tome 27 (1980) no. 1, pp. 47-57. http://gdmltest.u-ga.fr/item/1029002308/